John m



(No Model.)

J. M. GRIEST.

THROAT PLATE ATTACHMENT FOR SEWING MACHINES. 1 Io.319,703.

Patented June 9, 1885.

' UNITED STATES PATENT Gr mes.

JOHN M. GRIEST, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY OF NEWV JERSEY.

THROAT-PLATE ATTACHMENT FOR SEWING-MACHINES.

FJPECIFIC'ATION forming part of Letters Patent No. 319,703, dated June 9, 1885.

Application filed October 27, 1894. (NomodeL) To all whom it may concern.-

Be it known that I, JOHN M. GRIEsT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Imp rovements in Throat-Plate Attachments for Sewiug-Machines,of which the followingis a speci-' fication, reference being had therein to the accompanying drawings.

The object of my invention is to provide an attachment-plate adapted to be removably secured to the throat-plate of a sewing-machine of such construction that it may be quickly and easily fastened to or removed from the throat-plate without the use of attaching screws or similar devices. I accomplish this object by making my attachment-plate of thin metal and providing it with several depending lips or lugs adapted to impinge against the throat-plate, the resilience of the attachment-plate permitting these lips or lugs to be sprung into engagement with thethroat, and thus hold the attachment-plate securely in place.

In the drawings, Figure 1 is a plan View of ahalf-round Singer throat-plate with one of my attachment-plates in position thereon, the attachment-plate carrying a separator-plate for use in connection with a ruffler. Fig. 2

is a plan view of athroat-plate and an attachment-plate, the latter being made in the form of an under-braider. Fig. 3 is an under side perspective view of the attachmentpl ate shown in Fig. 1. Fig. 4is a plan view of the throatplate shown in Fig. l; and Fig. 5a plan view of a slightly different form of throat-plate. Fig. 6 is a detail under side perspective view of an attachment-plate adapted to the throatplate shown in Fig. 5, and Fig. 7 a plan view of an attachment-plate carrying a hemmer.

A indicates a sewing-machine throat-plate having the usual feed and needle openingsand holes for the screws by which it is fastened to the bed-plate of the machine.

B is an attachment-plate provided at its ends with downwardlyturned lips or lugs 11, and at an intermediate part with a lug, 1), adapted for engagement with a recess, a, in the throatplate, said recess being preferably at or that which is to be engaged by the lips orlugs b. The intermediate lug, b, may bea pin, as shownin Fig. 3, adapted to engage a screwhole or recess a, as shown in Fig. 4, or said intermediate lug may be simply a depending lip, like the lugs b, as shown in Fig. 6, adapted for engagement with a recess, a, in the edge of the throat-plate, as in Fig. 5.

In order to insure the proper engagement of the attachment-plate with the throat-plate, it is necessary for the attaching lips or lugs to extend at right angles from the body of the former plate, or approximately so, as clearly shown in the drawings. I

The attachment-plate, being made of thin metal is somewhat resilient, and said plate may be fastened to the throat-plate simply by inserting the lip or lug b in the recess a of the throat-plate and then springing the lips or lugs I) over the opposite edge of the throatplate. Itis obvious that the lug or lip b in the recess a will insure a positive engagement between the two plates, so that the attachmentplate cannot slip on the throat-plate, and with the assistance of thelips or lugs b; which have a yielding hold on the edge of the throat-plate, the attachment-plate will be held securely in place.

Instead of a single lug intermediate of the end lugs on the attachment-plate, it is obvious that two or more of such intermediate lugs may be used, if necessary or desirable; but a single intermediate lug will usually be quite sufficient and is therefore preferable.

The attachment-plate may be utilized for holding various attachments which it may be desirable to secure removably to the sewing machine-the separator-plate 0, (shown in Figs. 1 and 3,) the under-braider (1, (shown in Fig. 2,) and the hemmer 6, (shown in Fig. 7,) being merely illustrations of the use of my attachment-plate.

I claim as my invention 1. The combination, with a sewing=machine throat-plate having a recess at or nearzone side, of an attachment-plate having depending lips or lugs at its ends and an intermediate lip or lug, the latter adapted for engagement with the said recess to hold the said I Intestimony whereof I affix my signature 1o attachment-plate positively in place, substanin presence of two witnesses.

tially as set forth.

2. The combination, with a semicircular JOHN M. GRIEST.

5'thr0at-p1ate having a recess, of a curved or semicircular attachment-plate having depend- VVit-nesses ing lips 01' lugs at its ends and an intermedi- J OSIAH SIMiIs,

ate lip or lug adapted for engagement with RICHARD SIMMS.

said recess, snbstantiallyas set forth. 

